Python implements simple FTP client using ftplib

Python implements simple FTP client using ftplib

This example describes how to use ftplib to implement a simple FTP client in Python. Share it with you for your reference. The specific implementation method is as follows:

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#! /Usr/bin/python #-*-Coding: UTF-8 -*- From ftplib import FTP # load the ftp Module Ftp = FTP () # Set Variables Ftp. set_debuglevel (2) # enable debug level 2 and display details Ftp. connect ("IP", "port") # connect to the ftp server and port Ftp. login ("user", "password") # connection username and password Print ftp. getwelcome () # print the welcome information Ftp. cmd ("xxx/xxx") # change the remote directory Bufsize = 1024 # Set the buffer size Filename = "filename.txt" # files to be downloaded File_handle = open (filename, "wb"). write # Open a file locally in write mode Ftp. retrbinaly ("RETR filename.txt", file_handle, bufsize) # Receiving files from the server and writing them to a local file Ftp. set_debuglevel (0) # disable debugging mode Ftp. quit # exit ftp Ftp. dir () # display file information in the directory Ftp. mkd (pathname) # create a remote directory Ftp. pwd () # Return the current location Ftp. rmd (dirname) # delete a remote directory Ftp. delete (filename) # delete a Remote File Ftp. rename (fromname, toname) # Change fromname to toname. Ftp. storbinaly ("STOR filename.txt", file_handel, bufsize) # upload the target file

A complete FTP instance:

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# Coding: UTF-8 From ctypes import * Import OS Import sys Import ftplib Class myFtp: Ftp = ftplib. FTP () BIsDir = False Path = "" Def _ init _ (self, host, port = '21 '): Self. ftp. set_debuglevel (2) # enable debug level 2 and display details # Self. ftp. set_pasv (0) #0 Active Mode 1 # Passive Mode Self. ftp. connect (host, port) Def Login (self, user, passwd ): Self. ftp. login (user, passwd) Print self. ftp. welcome Def DownLoadFile (self, LocalFile, RemoteFile ): File_handler = open (LocalFile, 'wb ') Self. ftp. retrbinary ("RETR % s" % (RemoteFile), file_handler.write) File_handler.close () Return True Def UpLoadFile (self, LocalFile, RemoteFile ): If OS. path. isfile (LocalFile) = False: Return False File_handler = open (LocalFile, "rb ") Self. ftp. storbinary ('stor % s' % RemoteFile, file_handler, 4096) File_handler.close () Return True Def UpLoadFileTree (self, LocalDir, RemoteDir ): If OS. path. isdir (LocalDir) = False: Return False LocalNames = OS. listdir (LocalDir) Print RemoteDir Self. ftp. cwd (RemoteDir) For Local in LocalNames: Src = OS. path. join (LocalDir, Local) If OS. path. isdir (src ): Self. UpLoadFileTree (src, Local) Else: Self. UpLoadFile (src, Local) Self. ftp. cwd ("..") Return Def DownLoadFileTree (self, LocalDir, RemoteDir ): If OS. path. isdir (LocalDir) = False: OS. makedirs (LocalDir) Self. ftp. cwd (RemoteDir) RemoteNames = self. ftp. nlst () For file in RemoteNames: Local = OS. path. join (LocalDir, file) If self. isDir (file ): Self. DownLoadFileTree (Local, file) Else: Self. DownLoadFile (Local, file) Self. ftp. cwd ("..") Return Def show (self, list ): Result = list. lower (). split ("") If self. path in result and "<dir>" in result: Self. bIsDir = True Def isDir (self, path ): Self. bIsDir = False Self. path = path # This ues callback function, that will change bIsDir value Self. ftp. retrlines ('LIST', self. show) Return self. bIsDir Def close (self ): Self. ftp. quit () Ftp = myFtp ('********') Ftp. Login ('*****','*****') # Ftp. DownLoadFile ('test. TXT ', 'oss \ runtime. log') # OK # Ftp. UpLoadFile ('runtime. log', 'oss \ runtime. log') # OK # Ftp. DownLoadFileTree ('bcd', 'oss \ abc') # OK # Ftp. UpLoadFileTree ('aaa', "others \\") Ftp. close () Print "OK! "

I hope this article will help you with Python programming.